Upstream ChromeOS patch on O3D. (Change Icf3bc91d: http://gerrit.chromium.org/gerrit/#change,2220)

build/libs.gyp

 # Copyright (c) 2009 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     'chromium_code': 1,
     'dx_redist_path':
         '../../o3d-internal/third_party/dx_nov_2007_redist',
     'dx_redist_exists': '<!(python file_exists.py ../../o3d-internal/third_party/dx_nov_2007_redist/d3dx9_36.dll)',
     'swiftshader_path':
         '../../o3d-internal/third_party/swiftshader/files/swiftshader_d3d9.dll',
     'swiftshader_exists':
         '<!(python file_exists.py ../../o3d-internal/third_party/swiftshader/files/swiftshader_d3d9.dll)',
   },
   'includes': [
     'common.gypi',
   ],
   'targets': [
     {
       'target_name': 'cairo_libs',
       'type': 'none',
       'conditions': [
         ['OS=="linux"',
           {
             'all_dependent_settings': {
               'cflags': [
-                '<!@(pkg-config --cflags cairo)',
+                '<!@(<(pkg-config) --cflags cairo)',
               ],
               'ldflags': [
-                '<!@(pkg-config --libs-only-L --libs-only-other cairo)',
+                '<!@(<(pkg-config) --libs-only-L --libs-only-other cairo)',
               ],
               'libraries': [
-                '<!@(pkg-config --libs-only-l cairo)',
+                '<!@(<(pkg-config) --libs-only-l cairo)',
               ],
             },
           },
         ],
         ['OS=="mac"',
           {
             'dependencies': [
               'pixman.gyp:pixman',
               'cairo.gyp:cairo',
             ],
@@ skipping 354 matching lines @@
       },
     ],
   ],
 }
 
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